Radiator-valve union nipple-wrench.



No. 817,695. PATENTED APR. 10, 1906. L. W. DUKERSGHIEN & F. ENGLE.RADIATOR VALVE UNION NIPPLE WRENCH.

APPLIOATION FILED APR.5, 1905.

f I i 6 My: II lJ In v I w Gamma UNTTED STATES PATENT OEETOE.

RADIATOR-VALVE UNION NIPPLE-WRENCH.

Specification of Letters Patent.

Patented April 10, 1906.

Application filed April 5, 1905. Serial No. 254,049.

To all whom it may concern:

Be it known that we, LoUIs DUKER- SCHIEN and FRED ENGLE, citizens of theUnited States, residing at Oshkosh, in the county of l/Vinnebago andState of WVisconsin, have invented new and useful Improvements inCombination Radiator-Valve Union Nipple-Trenches, of which the followingis a specification.

Our invention relates to improvements in wrenches, and in particular towrenches ap plicable for use for turning radiator union nipples.

The object of our invention is to provide an internal wrench which isadapted to apply to all sizes of nipples, of which there are in useordinarily four sizes, each of which is provided with internallongitudinal lugs.

A further object of our invention is to provide a simple internal wrenchwhich combines all of the characteristic features of other knownwrenches, yet one which is admirably suited for union-nipples and whichcan readily and without adjustment of parts be accommodated to thevarious sizes of nipples employed in radiator-valve unions.

The invention consists, furthermore, in such features and details aswill be described in connection with the accompanying drawings and thenmore particularly be pointed out in the claim.

In the drawings, Figure 1 is a side eleva tion, Fig. 2 an end view, andFig. 3 an end view, of a union-nipple.

Referring more in detail to the drawings, 2 represents the centralportion of the shank comprising the wrench, said portion being angularin section and preferably rectangular, so as to be suited for receivingthe jaws of an ordinary wrench, by means of which the internal wrenchwhen applied to the nip ples is rotated. The entire wrench is taperingand at certain determined points is pro vided with projections or heads3, 4, 5, and 6 of the same conformation as the remaining portion of theshank, with the exception of the angular portion. These projections aregraduated to the sizes of nipples to which this wrench is adapted to beapplied. These union-nipples being usually of annular form, the wrenchis made to conform therewith.

In the drawings it will be seen that the wrench embraces fourgraduations adapted to fit four difi erent sizes of nipples, the forwardend of the wrench 3 being designed for a one-inch size nipple, 4representing the size for use on a one and one-fourth inch, 5 one andone-half inches, and 6 two inches in diameter. The peripheral side ofthis wrench has extending longitudinally thereof grooves 7, 8, 9, and10, respectively, each provided in the respective graduations andadapted to engage that size nipple into the lugs of which the grooveportion of this wrench is intended to fit. The engagement of the ribs orlugs in the grooves or channels insures rotation of the nipples with thewrench when the latter is rotated by the engagement of the wrench withthe body portion 2, which, as has already been described, is providedwith angular faces in order to receive the jaws of the wrench. Thecentral portion of this wrench, which is provided with angular faces,extends along a lower plane than that of the periphery of the wrench andthe projections or shoulders formed thereon. In this manner thedisadvantage of having the central portion formed as a handle andprojecting above the plane of the projections, by reason of which thesame will be apt to strike against the radiator tube containing thenipple through which this wrench is to be inserted, will be obviated.

It will be easily understood that this invention embodies a single toolwhich is adapted to all sizes of union-nipples in ordinary use and thatthe use of more than one wrench for a like purpose is dispensed with.Either end of the wrench may be inserted into the nipple until theproper-sized head engages the internal ribs or lugs of the same,whereupon the same can be easily rotated. If the forward end of thewrench-that is to say, the smaller end, shown at 3is inserted and thenipple is of greater diameter than the diameter of the wrench inserted,then the wrench may be forced farther down into the tube containing thenipple until the longitu dinal channels of the same engage theinternally-projecting ribs of the same. In like manner the larger end orhead 5 of the wrench may be inserted when it is necessary to adjust thesame to the nipple of a diameter corresponding to that of the wrench.

The projecting portions of the wrench forming the graduations are easyof construction, and the entire wrench may be cast in one operationwithout the use of any machinery except that of course for grinding.

Having thus described our invention, what We claim and desire to secureby Letters Patent of the United States,is-

A Wrench comprising a shank formed with a coaxially-stepped head anddiametricallydisposed continuous furrows formed longitudinally of thestepped head.

In testimony whereof We have hereunto set our hands in the presence oftwo subscribing Witnesses.

LOUIS W. DUKERSOHIEN. FRED ENGLE. Witnesses:

WM. B. STICKNEY, A. R. WATERI-IOUSE.

